Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/12949#discussion_r62354994
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala
---
@@ -239,8 +239,13 @@ case class DataSource(
}
}
- /** Create a resolved [[BaseRelation]] that can be used to read data
from this [[DataSource]] */
- def resolveRelation(): BaseRelation = {
+ /**
+ * Create a resolved [[BaseRelation]] that can be used to read data from
or write data into this
+ * [[DataSource]]
+ *
+ * @param checkPathExist A flag to indicate whether to check the
existence of path or not.
+ */
+ def resolveRelation(checkPathExist: Boolean = true): BaseRelation = {
--- End diff --
I am not sure I understand this change. For a `FileFormat`, when do we not
need to check if the path exists?
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